Outei Denka no Ochaku Migakari

Carina, an orphan with a talent for baking, suddenly receives a request to work at the castle as an attendant for the Crown Prince's younger brother. Although he's known for disliking women, the prince's prickly attitude slowly begins to thaw as he consumes Carina's delicious cookies and fragrant tea. As they share these relaxing tea breaks together, Carina and the prince find themselves becoming closer and closer... (Source: MangaPlaza)